The traditional memory channel does not store anything to disk on processshutdown, so you lose the data if you kill the process. However, a plainreconfiguration will not reinitialize or clear the channel as long as thechannel name remains the same.

The recoverable memory channel thing (FLUME-896) was never stable and wasremoved some time back.

As far as I know, the spillable memory channel does not today spill to diskon shutdown, but one could conceive of adding this feature, since it usesits own internal file channel instance to "spill" when its memory capacityhas been exceeded.